The 52-week range is a data point commonly published by financial news media, that includes the stock's lowest and highest price throughout the last 52 weeks. Investors use this data to estimate the level of risk and variation they might encounter over the course of a year if they decide to purchase a particular stock. Investors can locate a stock's 52-week range in the quote summary that a broker or financial information website provides for the stock. This data can be seen on a pricing chart that displays one year's worth of price data.